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Finding the Fourth Proportional to 657,707.90, 986,233.80 and 302,320.40

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Solution

The fourth proportional to 657,707.90, 986,233.80 and 302,320.40 is: 453,329.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,707.90 : 986,233.80 = 302,320.40 : x
  2. Step 2: Convert to fraction form
    657,707.90/986,233.80 = 302,320.40/x
  3. Step 3: Cross multiply
    657,707.90x = 986,233.80 × 302,320.40
  4. Step 4: Simplify right side
    657,707.90x = 298,158,596,909.52
  5. Step 5: Solve for x
    x = 298,158,596,909.52/657,707.90
  6. Step 6: Final answer
    x = 453,329.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.