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Finding the Fourth Proportional to 1,243,407.02, 1,865,110.40 and 344,848.74

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Solution

The fourth proportional to 1,243,407.02, 1,865,110.40 and 344,848.74 is: 517,273.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,407.02 : 1,865,110.40 = 344,848.74 : x
  2. Step 2: Convert to fraction form
    1,243,407.02/1,865,110.40 = 344,848.74/x
  3. Step 3: Cross multiply
    1,243,407.02x = 1,865,110.40 × 344,848.74
  4. Step 4: Simplify right side
    1,243,407.02x = 643,180,971,400.90
  5. Step 5: Solve for x
    x = 643,180,971,400.90/1,243,407.02
  6. Step 6: Final answer
    x = 517,273.07

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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.