Home / 781,040.74-1,078,065.36-454,430.59

Finding the Fourth Proportional to 781,040.74, 1,078,065.36 and 454,430.59

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Solution

The fourth proportional to 781,040.74, 1,078,065.36 and 454,430.59 is: 627,247.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,040.74 : 1,078,065.36 = 454,430.59 : x
  2. Step 2: Convert to fraction form
    781,040.74/1,078,065.36 = 454,430.59/x
  3. Step 3: Cross multiply
    781,040.74x = 1,078,065.36 × 454,430.59
  4. Step 4: Simplify right side
    781,040.74x = 489,905,877,603.36
  5. Step 5: Solve for x
    x = 489,905,877,603.36/781,040.74
  6. Step 6: Final answer
    x = 627,247.53

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Double scale
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1.5x scale

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.