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Finding the Fourth Proportional to 656,432, 979,495.68 and 616,307.84

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Solution

The fourth proportional to 656,432, 979,495.68 and 616,307.84 is: 919,624.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,432 : 979,495.68 = 616,307.84 : x
  2. Step 2: Convert to fraction form
    656,432/979,495.68 = 616,307.84/x
  3. Step 3: Cross multiply
    656,432x = 979,495.68 × 616,307.84
  4. Step 4: Simplify right side
    656,432x = 603,670,866,830.13
  5. Step 5: Solve for x
    x = 603,670,866,830.13/656,432
  6. Step 6: Final answer
    x = 919,624.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.