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Finding the Fourth Proportional to 1,239,862.08, 1,710,938.40 and 695,947.20

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Solution

The fourth proportional to 1,239,862.08, 1,710,938.40 and 695,947.20 is: 960,367.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,862.08 : 1,710,938.40 = 695,947.20 : x
  2. Step 2: Convert to fraction form
    1,239,862.08/1,710,938.40 = 695,947.20/x
  3. Step 3: Cross multiply
    1,239,862.08x = 1,710,938.40 × 695,947.20
  4. Step 4: Simplify right side
    1,239,862.08x = 1,190,722,788,852.48
  5. Step 5: Solve for x
    x = 1,190,722,788,852.48/1,239,862.08
  6. Step 6: Final answer
    x = 960,367.13

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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.