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Finding the Fourth Proportional to 983,729.52, 1,357,572 and 554,024.40

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Solution

The fourth proportional to 983,729.52, 1,357,572 and 554,024.40 is: 764,567.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    983,729.52 : 1,357,572 = 554,024.40 : x
  2. Step 2: Convert to fraction form
    983,729.52/1,357,572 = 554,024.40/x
  3. Step 3: Cross multiply
    983,729.52x = 1,357,572 × 554,024.40
  4. Step 4: Simplify right side
    983,729.52x = 752,128,012,756.80
  5. Step 5: Solve for x
    x = 752,128,012,756.80/983,729.52
  6. Step 6: Final answer
    x = 764,567.90

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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.