Home / 739,307.17-1,020,243.99-399,775.42

Finding the Fourth Proportional to 739,307.17, 1,020,243.99 and 399,775.42

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Solution

The fourth proportional to 739,307.17, 1,020,243.99 and 399,775.42 is: 551,690.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,307.17 : 1,020,243.99 = 399,775.42 : x
  2. Step 2: Convert to fraction form
    739,307.17/1,020,243.99 = 399,775.42/x
  3. Step 3: Cross multiply
    739,307.17x = 1,020,243.99 × 399,775.42
  4. Step 4: Simplify right side
    739,307.17x = 407,868,464,391.58
  5. Step 5: Solve for x
    x = 407,868,464,391.58/739,307.17
  6. Step 6: Final answer
    x = 551,690.13

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.