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Finding the Fourth Proportional to 510,701.88, 703,569.81 and 355,386.16

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Solution

The fourth proportional to 510,701.88, 703,569.81 and 355,386.16 is: 489,598.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,701.88 : 703,569.81 = 355,386.16 : x
  2. Step 2: Convert to fraction form
    510,701.88/703,569.81 = 355,386.16/x
  3. Step 3: Cross multiply
    510,701.88x = 703,569.81 × 355,386.16
  4. Step 4: Simplify right side
    510,701.88x = 250,038,975,279.99
  5. Step 5: Solve for x
    x = 250,038,975,279.99/510,701.88
  6. Step 6: Final answer
    x = 489,598.69

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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.