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Finding the Fourth Proportional to 604,811.40, 905,904.90 and 499,835.40

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Solution

The fourth proportional to 604,811.40, 905,904.90 and 499,835.40 is: 748,668.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,811.40 : 905,904.90 = 499,835.40 : x
  2. Step 2: Convert to fraction form
    604,811.40/905,904.90 = 499,835.40/x
  3. Step 3: Cross multiply
    604,811.40x = 905,904.90 × 499,835.40
  4. Step 4: Simplify right side
    604,811.40x = 452,803,338,053.46
  5. Step 5: Solve for x
    x = 452,803,338,053.46/604,811.40
  6. Step 6: Final answer
    x = 748,668.66

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Double scale
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Similar ratio
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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.