Home / 651,623.20-977,434.80-402,791.20

Finding the Fourth Proportional to 651,623.20, 977,434.80 and 402,791.20

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Solution

The fourth proportional to 651,623.20, 977,434.80 and 402,791.20 is: 604,186.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,623.20 : 977,434.80 = 402,791.20 : x
  2. Step 2: Convert to fraction form
    651,623.20/977,434.80 = 402,791.20/x
  3. Step 3: Cross multiply
    651,623.20x = 977,434.80 × 402,791.20
  4. Step 4: Simplify right side
    651,623.20x = 393,702,136,013.76
  5. Step 5: Solve for x
    x = 393,702,136,013.76/651,623.20
  6. Step 6: Final answer
    x = 604,186.80

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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.