Home / 1,152,209.07-1,590,047.28-642,911.45

Finding the Fourth Proportional to 1,152,209.07, 1,590,047.28 and 642,911.45

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Solution

The fourth proportional to 1,152,209.07, 1,590,047.28 and 642,911.45 is: 887,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,209.07 : 1,590,047.28 = 642,911.45 : x
  2. Step 2: Convert to fraction form
    1,152,209.07/1,590,047.28 = 642,911.45/x
  3. Step 3: Cross multiply
    1,152,209.07x = 1,590,047.28 × 642,911.45
  4. Step 4: Simplify right side
    1,152,209.07x = 1,022,259,594,403.12
  5. Step 5: Solve for x
    x = 1,022,259,594,403.12/1,152,209.07
  6. Step 6: Final answer
    x = 887,217.10

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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.