Home / 651,637.20-977,455.80-402,805.20

Finding the Fourth Proportional to 651,637.20, 977,455.80 and 402,805.20

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Solution

The fourth proportional to 651,637.20, 977,455.80 and 402,805.20 is: 604,207.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,637.20 : 977,455.80 = 402,805.20 : x
  2. Step 2: Convert to fraction form
    651,637.20/977,455.80 = 402,805.20/x
  3. Step 3: Cross multiply
    651,637.20x = 977,455.80 × 402,805.20
  4. Step 4: Simplify right side
    651,637.20x = 393,724,279,010.16
  5. Step 5: Solve for x
    x = 393,724,279,010.16/651,637.20
  6. Step 6: Final answer
    x = 604,207.80

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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.