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Finding the Fourth Proportional to 679,503.47, 937,715.38 and 373,585.05

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Solution

The fourth proportional to 679,503.47, 937,715.38 and 373,585.05 is: 515,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,503.47 : 937,715.38 = 373,585.05 : x
  2. Step 2: Convert to fraction form
    679,503.47/937,715.38 = 373,585.05/x
  3. Step 3: Cross multiply
    679,503.47x = 937,715.38 × 373,585.05
  4. Step 4: Simplify right side
    679,503.47x = 350,316,446,189.11
  5. Step 5: Solve for x
    x = 350,316,446,189.11/679,503.47
  6. Step 6: Final answer
    x = 515,547.70

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.