Home / 816,935.40-1,225,403.10-397,031.40

Finding the Fourth Proportional to 816,935.40, 1,225,403.10 and 397,031.40

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Solution

The fourth proportional to 816,935.40, 1,225,403.10 and 397,031.40 is: 595,547.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,935.40 : 1,225,403.10 = 397,031.40 : x
  2. Step 2: Convert to fraction form
    816,935.40/1,225,403.10 = 397,031.40/x
  3. Step 3: Cross multiply
    816,935.40x = 1,225,403.10 × 397,031.40
  4. Step 4: Simplify right side
    816,935.40x = 486,523,508,357.34
  5. Step 5: Solve for x
    x = 486,523,508,357.34/816,935.40
  6. Step 6: Final answer
    x = 595,547.10

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Half scale
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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.