Home / 1,126,300.32-1,554,405.90-642,938.07

Finding the Fourth Proportional to 1,126,300.32, 1,554,405.90 and 642,938.07

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Solution

The fourth proportional to 1,126,300.32, 1,554,405.90 and 642,938.07 is: 887,318.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,300.32 : 1,554,405.90 = 642,938.07 : x
  2. Step 2: Convert to fraction form
    1,126,300.32/1,554,405.90 = 642,938.07/x
  3. Step 3: Cross multiply
    1,126,300.32x = 1,554,405.90 × 642,938.07
  4. Step 4: Simplify right side
    1,126,300.32x = 999,386,729,342.61
  5. Step 5: Solve for x
    x = 999,386,729,342.61/1,126,300.32
  6. Step 6: Final answer
    x = 887,318.16

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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.