Home / 1,280,123.16-1,766,635.74-707,158.68

Finding the Fourth Proportional to 1,280,123.16, 1,766,635.74 and 707,158.68

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Solution

The fourth proportional to 1,280,123.16, 1,766,635.74 and 707,158.68 is: 975,915.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,123.16 : 1,766,635.74 = 707,158.68 : x
  2. Step 2: Convert to fraction form
    1,280,123.16/1,766,635.74 = 707,158.68/x
  3. Step 3: Cross multiply
    1,280,123.16x = 1,766,635.74 × 707,158.68
  4. Step 4: Simplify right side
    1,280,123.16x = 1,249,291,797,939.22
  5. Step 5: Solve for x
    x = 1,249,291,797,939.22/1,280,123.16
  6. Step 6: Final answer
    x = 975,915.32

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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.