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Finding the Fourth Proportional to 867,335.70, 1,301,003.55 and 778,980.90

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Solution

The fourth proportional to 867,335.70, 1,301,003.55 and 778,980.90 is: 1,168,471.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,335.70 : 1,301,003.55 = 778,980.90 : x
  2. Step 2: Convert to fraction form
    867,335.70/1,301,003.55 = 778,980.90/x
  3. Step 3: Cross multiply
    867,335.70x = 1,301,003.55 × 778,980.90
  4. Step 4: Simplify right side
    867,335.70x = 1,013,456,916,282.20
  5. Step 5: Solve for x
    x = 1,013,456,916,282.20/867,335.70
  6. Step 6: Final answer
    x = 1,168,471.35

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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.