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Finding the Fourth Proportional to 646,291.50, 891,651.40 and 374,210.88

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Solution

The fourth proportional to 646,291.50, 891,651.40 and 374,210.88 is: 516,277.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,291.50 : 891,651.40 = 374,210.88 : x
  2. Step 2: Convert to fraction form
    646,291.50/891,651.40 = 374,210.88/x
  3. Step 3: Cross multiply
    646,291.50x = 891,651.40 × 374,210.88
  4. Step 4: Simplify right side
    646,291.50x = 333,665,655,047.23
  5. Step 5: Solve for x
    x = 333,665,655,047.23/646,291.50
  6. Step 6: Final answer
    x = 516,277.34

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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.