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Finding the Fourth Proportional to 706,431.03, 974,845.16 and 400,528

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Solution

The fourth proportional to 706,431.03, 974,845.16 and 400,528 is: 552,711.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,431.03 : 974,845.16 = 400,528 : x
  2. Step 2: Convert to fraction form
    706,431.03/974,845.16 = 400,528/x
  3. Step 3: Cross multiply
    706,431.03x = 974,845.16 × 400,528
  4. Step 4: Simplify right side
    706,431.03x = 390,452,782,244.48
  5. Step 5: Solve for x
    x = 390,452,782,244.48/706,431.03
  6. Step 6: Final answer
    x = 552,711.82

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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.