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Finding the Fourth Proportional to 919,444.80, 1,376,056.80 and 807,470.40

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Solution

The fourth proportional to 919,444.80, 1,376,056.80 and 807,470.40 is: 1,208,474.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,444.80 : 1,376,056.80 = 807,470.40 : x
  2. Step 2: Convert to fraction form
    919,444.80/1,376,056.80 = 807,470.40/x
  3. Step 3: Cross multiply
    919,444.80x = 1,376,056.80 × 807,470.40
  4. Step 4: Simplify right side
    919,444.80x = 1,111,125,134,718.72
  5. Step 5: Solve for x
    x = 1,111,125,134,718.72/919,444.80
  6. Step 6: Final answer
    x = 1,208,474.00

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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.