Home / 918,298.60-1,377,447.90-445,031.80

Finding the Fourth Proportional to 918,298.60, 1,377,447.90 and 445,031.80

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Solution

The fourth proportional to 918,298.60, 1,377,447.90 and 445,031.80 is: 667,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,298.60 : 1,377,447.90 = 445,031.80 : x
  2. Step 2: Convert to fraction form
    918,298.60/1,377,447.90 = 445,031.80/x
  3. Step 3: Cross multiply
    918,298.60x = 1,377,447.90 × 445,031.80
  4. Step 4: Simplify right side
    918,298.60x = 613,008,118,343.22
  5. Step 5: Solve for x
    x = 613,008,118,343.22/918,298.60
  6. Step 6: Final answer
    x = 667,547.70

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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.