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Finding the Fourth Proportional to 661,510.84, 913,258.98 and 506,169.28

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Solution

The fourth proportional to 661,510.84, 913,258.98 and 506,169.28 is: 698,799.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,510.84 : 913,258.98 = 506,169.28 : x
  2. Step 2: Convert to fraction form
    661,510.84/913,258.98 = 506,169.28/x
  3. Step 3: Cross multiply
    661,510.84x = 913,258.98 × 506,169.28
  4. Step 4: Simplify right side
    661,510.84x = 462,263,640,360.13
  5. Step 5: Solve for x
    x = 462,263,640,360.13/661,510.84
  6. Step 6: Final answer
    x = 698,799.80

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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.