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Finding the Fourth Proportional to 867,663.68, 1,301,190.71 and 260,270.91

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Solution

The fourth proportional to 867,663.68, 1,301,190.71 and 260,270.91 is: 390,314.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,663.68 : 1,301,190.71 = 260,270.91 : x
  2. Step 2: Convert to fraction form
    867,663.68/1,301,190.71 = 260,270.91/x
  3. Step 3: Cross multiply
    867,663.68x = 1,301,190.71 × 260,270.91
  4. Step 4: Simplify right side
    867,663.68x = 338,662,088,873.89
  5. Step 5: Solve for x
    x = 338,662,088,873.89/867,663.68
  6. Step 6: Final answer
    x = 390,314.93

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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.