Home / 870,678.98-1,201,471.10-488,631.96

Finding the Fourth Proportional to 870,678.98, 1,201,471.10 and 488,631.96

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Solution

The fourth proportional to 870,678.98, 1,201,471.10 and 488,631.96 is: 674,275.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,678.98 : 1,201,471.10 = 488,631.96 : x
  2. Step 2: Convert to fraction form
    870,678.98/1,201,471.10 = 488,631.96/x
  3. Step 3: Cross multiply
    870,678.98x = 1,201,471.10 × 488,631.96
  4. Step 4: Simplify right side
    870,678.98x = 587,077,178,476.36
  5. Step 5: Solve for x
    x = 587,077,178,476.36/870,678.98
  6. Step 6: Final answer
    x = 674,275.13

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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.