Home / 742,441.40-1,024,569.88-402,909.66

Finding the Fourth Proportional to 742,441.40, 1,024,569.88 and 402,909.66

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Solution

The fourth proportional to 742,441.40, 1,024,569.88 and 402,909.66 is: 556,015.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,441.40 : 1,024,569.88 = 402,909.66 : x
  2. Step 2: Convert to fraction form
    742,441.40/1,024,569.88 = 402,909.66/x
  3. Step 3: Cross multiply
    742,441.40x = 1,024,569.88 × 402,909.66
  4. Step 4: Simplify right side
    742,441.40x = 412,809,101,997.04
  5. Step 5: Solve for x
    x = 412,809,101,997.04/742,441.40
  6. Step 6: Final answer
    x = 556,015.74

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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.