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Finding the Fourth Proportional to 1,315,569.01, 1,815,485.21 and 711,957.01

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Solution

The fourth proportional to 1,315,569.01, 1,815,485.21 and 711,957.01 is: 982,500.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,569.01 : 1,815,485.21 = 711,957.01 : x
  2. Step 2: Convert to fraction form
    1,315,569.01/1,815,485.21 = 711,957.01/x
  3. Step 3: Cross multiply
    1,315,569.01x = 1,815,485.21 × 711,957.01
  4. Step 4: Simplify right side
    1,315,569.01x = 1,292,547,409,173.61
  5. Step 5: Solve for x
    x = 1,292,547,409,173.61/1,315,569.01
  6. Step 6: Final answer
    x = 982,500.66

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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.