Home / 870,178.38-1,305,111.87-553,695.18

Finding the Fourth Proportional to 870,178.38, 1,305,111.87 and 553,695.18

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Solution

The fourth proportional to 870,178.38, 1,305,111.87 and 553,695.18 is: 830,443.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,178.38 : 1,305,111.87 = 553,695.18 : x
  2. Step 2: Convert to fraction form
    870,178.38/1,305,111.87 = 553,695.18/x
  3. Step 3: Cross multiply
    870,178.38x = 1,305,111.87 × 553,695.18
  4. Step 4: Simplify right side
    870,178.38x = 722,634,151,779.79
  5. Step 5: Solve for x
    x = 722,634,151,779.79/870,178.38
  6. Step 6: Final answer
    x = 830,443.70

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Double scale
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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.