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Finding the Fourth Proportional to 885,505.80, 1,326,727.80 and 411,218.40

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Solution

The fourth proportional to 885,505.80, 1,326,727.80 and 411,218.40 is: 616,116.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,505.80 : 1,326,727.80 = 411,218.40 : x
  2. Step 2: Convert to fraction form
    885,505.80/1,326,727.80 = 411,218.40/x
  3. Step 3: Cross multiply
    885,505.80x = 1,326,727.80 × 411,218.40
  4. Step 4: Simplify right side
    885,505.80x = 545,574,883,151.52
  5. Step 5: Solve for x
    x = 545,574,883,151.52/885,505.80
  6. Step 6: Final answer
    x = 616,116.67

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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.