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Finding the Fourth Proportional to 721,870.14, 993,898.23 and 635,768.22

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Solution

The fourth proportional to 721,870.14, 993,898.23 and 635,768.22 is: 875,349.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,870.14 : 993,898.23 = 635,768.22 : x
  2. Step 2: Convert to fraction form
    721,870.14/993,898.23 = 635,768.22/x
  3. Step 3: Cross multiply
    721,870.14x = 993,898.23 × 635,768.22
  4. Step 4: Simplify right side
    721,870.14x = 631,888,908,548.25
  5. Step 5: Solve for x
    x = 631,888,908,548.25/721,870.14
  6. Step 6: Final answer
    x = 875,349.84

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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.