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Finding the Fourth Proportional to 768,640.74, 1,152,487.95 and 529,045.32

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Solution

The fourth proportional to 768,640.74, 1,152,487.95 and 529,045.32 is: 793,242.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,640.74 : 1,152,487.95 = 529,045.32 : x
  2. Step 2: Convert to fraction form
    768,640.74/1,152,487.95 = 529,045.32/x
  3. Step 3: Cross multiply
    768,640.74x = 1,152,487.95 × 529,045.32
  4. Step 4: Simplify right side
    768,640.74x = 609,718,358,641.80
  5. Step 5: Solve for x
    x = 609,718,358,641.80/768,640.74
  6. Step 6: Final answer
    x = 793,242.31

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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.