Home / 645,132.27-890,312.91-358,657.14

Finding the Fourth Proportional to 645,132.27, 890,312.91 and 358,657.14

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Solution

The fourth proportional to 645,132.27, 890,312.91 and 358,657.14 is: 494,963.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,132.27 : 890,312.91 = 358,657.14 : x
  2. Step 2: Convert to fraction form
    645,132.27/890,312.91 = 358,657.14/x
  3. Step 3: Cross multiply
    645,132.27x = 890,312.91 × 358,657.14
  4. Step 4: Simplify right side
    645,132.27x = 319,317,082,005.68
  5. Step 5: Solve for x
    x = 319,317,082,005.68/645,132.27
  6. Step 6: Final answer
    x = 494,963.74

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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.