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Finding the Fourth Proportional to 860,264, 1,187,164.32 and 483,432

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Solution

The fourth proportional to 860,264, 1,187,164.32 and 483,432 is: 667,136.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,264 : 1,187,164.32 = 483,432 : x
  2. Step 2: Convert to fraction form
    860,264/1,187,164.32 = 483,432/x
  3. Step 3: Cross multiply
    860,264x = 1,187,164.32 × 483,432
  4. Step 4: Simplify right side
    860,264x = 573,913,221,546.24
  5. Step 5: Solve for x
    x = 573,913,221,546.24/860,264
  6. Step 6: Final answer
    x = 667,136.16

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1.5x scale

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.