Home / 621,379.20-924,626.40-619,279.68

Finding the Fourth Proportional to 621,379.20, 924,626.40 and 619,279.68

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Solution

The fourth proportional to 621,379.20, 924,626.40 and 619,279.68 is: 921,502.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,379.20 : 924,626.40 = 619,279.68 : x
  2. Step 2: Convert to fraction form
    621,379.20/924,626.40 = 619,279.68/x
  3. Step 3: Cross multiply
    621,379.20x = 924,626.40 × 619,279.68
  4. Step 4: Simplify right side
    621,379.20x = 572,602,341,111.55
  5. Step 5: Solve for x
    x = 572,602,341,111.55/621,379.20
  6. Step 6: Final answer
    x = 921,502.27

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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.