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Finding the Fourth Proportional to 642,307.20, 962,539.20 and 472,502.40

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Solution

The fourth proportional to 642,307.20, 962,539.20 and 472,502.40 is: 708,075.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,307.20 : 962,539.20 = 472,502.40 : x
  2. Step 2: Convert to fraction form
    642,307.20/962,539.20 = 472,502.40/x
  3. Step 3: Cross multiply
    642,307.20x = 962,539.20 × 472,502.40
  4. Step 4: Simplify right side
    642,307.20x = 454,802,082,094.08
  5. Step 5: Solve for x
    x = 454,802,082,094.08/642,307.20
  6. Step 6: Final answer
    x = 708,075.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.