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Finding the Fourth Proportional to 617,646.16, 852,280.08 and 345,729.28

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Solution

The fourth proportional to 617,646.16, 852,280.08 and 345,729.28 is: 477,066.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,646.16 : 852,280.08 = 345,729.28 : x
  2. Step 2: Convert to fraction form
    617,646.16/852,280.08 = 345,729.28/x
  3. Step 3: Cross multiply
    617,646.16x = 852,280.08 × 345,729.28
  4. Step 4: Simplify right side
    617,646.16x = 294,658,178,416.74
  5. Step 5: Solve for x
    x = 294,658,178,416.74/617,646.16
  6. Step 6: Final answer
    x = 477,066.32

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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.