Home / 648,051.60-972,077.40-621,807.60

Finding the Fourth Proportional to 648,051.60, 972,077.40 and 621,807.60

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Solution

The fourth proportional to 648,051.60, 972,077.40 and 621,807.60 is: 932,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,051.60 : 972,077.40 = 621,807.60 : x
  2. Step 2: Convert to fraction form
    648,051.60/972,077.40 = 621,807.60/x
  3. Step 3: Cross multiply
    648,051.60x = 972,077.40 × 621,807.60
  4. Step 4: Simplify right side
    648,051.60x = 604,445,115,108.24
  5. Step 5: Solve for x
    x = 604,445,115,108.24/648,051.60
  6. Step 6: Final answer
    x = 932,711.40

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Half scale
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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.