Home / 648,023.10-972,034.65-621,779.10

Finding the Fourth Proportional to 648,023.10, 972,034.65 and 621,779.10

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Solution

The fourth proportional to 648,023.10, 972,034.65 and 621,779.10 is: 932,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,023.10 : 972,034.65 = 621,779.10 : x
  2. Step 2: Convert to fraction form
    648,023.10/972,034.65 = 621,779.10/x
  3. Step 3: Cross multiply
    648,023.10x = 972,034.65 × 621,779.10
  4. Step 4: Simplify right side
    648,023.10x = 604,390,829,845.82
  5. Step 5: Solve for x
    x = 604,390,829,845.82/648,023.10
  6. Step 6: Final answer
    x = 932,668.65

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Double scale
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Similar ratio
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1.5x scale

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.