Home / 1,021,620,538.04-1,409,836,288.55-551,721,813.75

Finding the Fourth Proportional to 1,021,620,538.04, 1,409,836,288.55 and 551,721,813.75

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Solution

The fourth proportional to 1,021,620,538.04, 1,409,836,288.55 and 551,721,813.75 is: 761,376,073.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,620,538.04 : 1,409,836,288.55 = 551,721,813.75 : x
  2. Step 2: Convert to fraction form
    1,021,620,538.04/1,409,836,288.55 = 551,721,813.75/x
  3. Step 3: Cross multiply
    1,021,620,538.04x = 1,409,836,288.55 × 551,721,813.75
  4. Step 4: Simplify right side
    1,021,620,538.04x = 777,837,434,206,615,808
  5. Step 5: Solve for x
    x = 777,837,434,206,615,808/1,021,620,538.04
  6. Step 6: Final answer
    x = 761,376,073.84

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Double scale
Find fourth proportional to 1,021,620,539.04, 1,409,836,289.93 and 551,721,814.75
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.