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Finding the Fourth Proportional to 817,670.70, 1,226,068.65 and 343,820.70

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Solution

The fourth proportional to 817,670.70, 1,226,068.65 and 343,820.70 is: 515,547.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,670.70 : 1,226,068.65 = 343,820.70 : x
  2. Step 2: Convert to fraction form
    817,670.70/1,226,068.65 = 343,820.70/x
  3. Step 3: Cross multiply
    817,670.70x = 1,226,068.65 × 343,820.70
  4. Step 4: Simplify right side
    817,670.70x = 421,547,781,491.06
  5. Step 5: Solve for x
    x = 421,547,781,491.06/817,670.70
  6. Step 6: Final answer
    x = 515,547.13

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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.