Home / 1,126,828.17-1,554,965.02-643,298.87

Finding the Fourth Proportional to 1,126,828.17, 1,554,965.02 and 643,298.87

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Solution

The fourth proportional to 1,126,828.17, 1,554,965.02 and 643,298.87 is: 887,719.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,828.17 : 1,554,965.02 = 643,298.87 : x
  2. Step 2: Convert to fraction form
    1,126,828.17/1,554,965.02 = 643,298.87/x
  3. Step 3: Cross multiply
    1,126,828.17x = 1,554,965.02 × 643,298.87
  4. Step 4: Simplify right side
    1,126,828.17x = 1,000,307,240,255.53
  5. Step 5: Solve for x
    x = 1,000,307,240,255.53/1,126,828.17
  6. Step 6: Final answer
    x = 887,719.41

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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.