Home / 1,128,547.28-1,557,395.27-645,123.22

Finding the Fourth Proportional to 1,128,547.28, 1,557,395.27 and 645,123.22

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Solution

The fourth proportional to 1,128,547.28, 1,557,395.27 and 645,123.22 is: 890,270.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,547.28 : 1,557,395.27 = 645,123.22 : x
  2. Step 2: Convert to fraction form
    1,128,547.28/1,557,395.27 = 645,123.22/x
  3. Step 3: Cross multiply
    1,128,547.28x = 1,557,395.27 × 645,123.22
  4. Step 4: Simplify right side
    1,128,547.28x = 1,004,711,846,695.28
  5. Step 5: Solve for x
    x = 1,004,711,846,695.28/1,128,547.28
  6. Step 6: Final answer
    x = 890,270.05

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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.