Home / 648,077.20-972,115.80-553,598.80

Finding the Fourth Proportional to 648,077.20, 972,115.80 and 553,598.80

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Solution

The fourth proportional to 648,077.20, 972,115.80 and 553,598.80 is: 830,398.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,077.20 : 972,115.80 = 553,598.80 : x
  2. Step 2: Convert to fraction form
    648,077.20/972,115.80 = 553,598.80/x
  3. Step 3: Cross multiply
    648,077.20x = 972,115.80 × 553,598.80
  4. Step 4: Simplify right side
    648,077.20x = 538,162,140,341.04
  5. Step 5: Solve for x
    x = 538,162,140,341.04/648,077.20
  6. Step 6: Final answer
    x = 830,398.20

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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.