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Finding the Fourth Proportional to 1,220,712, 1,684,602.84 and 676,870.74

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Solution

The fourth proportional to 1,220,712, 1,684,602.84 and 676,870.74 is: 934,092.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,712 : 1,684,602.84 = 676,870.74 : x
  2. Step 2: Convert to fraction form
    1,220,712/1,684,602.84 = 676,870.74/x
  3. Step 3: Cross multiply
    1,220,712x = 1,684,602.84 × 676,870.74
  4. Step 4: Simplify right side
    1,220,712x = 1,140,258,370,916.90
  5. Step 5: Solve for x
    x = 1,140,258,370,916.90/1,220,712
  6. Step 6: Final answer
    x = 934,092.87

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.