Home / 645,337.20-890,566.08-358,851.12

Finding the Fourth Proportional to 645,337.20, 890,566.08 and 358,851.12

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Solution

The fourth proportional to 645,337.20, 890,566.08 and 358,851.12 is: 495,214.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,337.20 : 890,566.08 = 358,851.12 : x
  2. Step 2: Convert to fraction form
    645,337.20/890,566.08 = 358,851.12/x
  3. Step 3: Cross multiply
    645,337.20x = 890,566.08 × 358,851.12
  4. Step 4: Simplify right side
    645,337.20x = 319,580,635,242.01
  5. Step 5: Solve for x
    x = 319,580,635,242.01/645,337.20
  6. Step 6: Final answer
    x = 495,214.96

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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.