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Finding the Fourth Proportional to 710,466.92, 980,432.91 and 388,170.10

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Solution

The fourth proportional to 710,466.92, 980,432.91 and 388,170.10 is: 535,668.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,466.92 : 980,432.91 = 388,170.10 : x
  2. Step 2: Convert to fraction form
    710,466.92/980,432.91 = 388,170.10/x
  3. Step 3: Cross multiply
    710,466.92x = 980,432.91 × 388,170.10
  4. Step 4: Simplify right side
    710,466.92x = 380,574,740,717.99
  5. Step 5: Solve for x
    x = 380,574,740,717.99/710,466.92
  6. Step 6: Final answer
    x = 535,668.49

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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.