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Finding the Fourth Proportional to 656,428.90, 984,643.35 and 652,281.70

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Solution

The fourth proportional to 656,428.90, 984,643.35 and 652,281.70 is: 978,422.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,428.90 : 984,643.35 = 652,281.70 : x
  2. Step 2: Convert to fraction form
    656,428.90/984,643.35 = 652,281.70/x
  3. Step 3: Cross multiply
    656,428.90x = 984,643.35 × 652,281.70
  4. Step 4: Simplify right side
    656,428.90x = 642,264,838,231.70
  5. Step 5: Solve for x
    x = 642,264,838,231.70/656,428.90
  6. Step 6: Final answer
    x = 978,422.55

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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.