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Finding the Fourth Proportional to 1,871,569.70, 2,807,354.55 and 1,021,264.10

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Solution

The fourth proportional to 1,871,569.70, 2,807,354.55 and 1,021,264.10 is: 1,531,896.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871,569.70 : 2,807,354.55 = 1,021,264.10 : x
  2. Step 2: Convert to fraction form
    1,871,569.70/2,807,354.55 = 1,021,264.10/x
  3. Step 3: Cross multiply
    1,871,569.70x = 2,807,354.55 × 1,021,264.10
  4. Step 4: Simplify right side
    1,871,569.70x = 2,867,050,417,886.66
  5. Step 5: Solve for x
    x = 2,867,050,417,886.66/1,871,569.70
  6. Step 6: Final answer
    x = 1,531,896.15

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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.