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Finding the Fourth Proportional to 1,315,547.24, 1,815,455.20 and 711,935.24

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Solution

The fourth proportional to 1,315,547.24, 1,815,455.20 and 711,935.24 is: 982,470.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,547.24 : 1,815,455.20 = 711,935.24 : x
  2. Step 2: Convert to fraction form
    1,315,547.24/1,815,455.20 = 711,935.24/x
  3. Step 3: Cross multiply
    1,315,547.24x = 1,815,455.20 × 711,935.24
  4. Step 4: Simplify right side
    1,315,547.24x = 1,292,486,533,521.25
  5. Step 5: Solve for x
    x = 1,292,486,533,521.25/1,315,547.24
  6. Step 6: Final answer
    x = 982,470.64

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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.