Home / 811,398.14-1,119,715.60-448,821.72

Finding the Fourth Proportional to 811,398.14, 1,119,715.60 and 448,821.72

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Solution

The fourth proportional to 811,398.14, 1,119,715.60 and 448,821.72 is: 619,366.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,398.14 : 1,119,715.60 = 448,821.72 : x
  2. Step 2: Convert to fraction form
    811,398.14/1,119,715.60 = 448,821.72/x
  3. Step 3: Cross multiply
    811,398.14x = 1,119,715.60 × 448,821.72
  4. Step 4: Simplify right side
    811,398.14x = 502,552,681,502.83
  5. Step 5: Solve for x
    x = 502,552,681,502.83/811,398.14
  6. Step 6: Final answer
    x = 619,366.32

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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.