Home / 715,501.48-987,452.64-486,566.62

Finding the Fourth Proportional to 715,501.48, 987,452.64 and 486,566.62

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Solution

The fourth proportional to 715,501.48, 987,452.64 and 486,566.62 is: 671,503.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,501.48 : 987,452.64 = 486,566.62 : x
  2. Step 2: Convert to fraction form
    715,501.48/987,452.64 = 486,566.62/x
  3. Step 3: Cross multiply
    715,501.48x = 987,452.64 × 486,566.62
  4. Step 4: Simplify right side
    715,501.48x = 480,461,493,454.88
  5. Step 5: Solve for x
    x = 480,461,493,454.88/715,501.48
  6. Step 6: Final answer
    x = 671,503.14

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.