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Finding the Fourth Proportional to 786,902.40, 1,182,686.40 and 684,259.20

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Solution

The fourth proportional to 786,902.40, 1,182,686.40 and 684,259.20 is: 1,028,417.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,902.40 : 1,182,686.40 = 684,259.20 : x
  2. Step 2: Convert to fraction form
    786,902.40/1,182,686.40 = 684,259.20/x
  3. Step 3: Cross multiply
    786,902.40x = 1,182,686.40 × 684,259.20
  4. Step 4: Simplify right side
    786,902.40x = 809,264,049,914.88
  5. Step 5: Solve for x
    x = 809,264,049,914.88/786,902.40
  6. Step 6: Final answer
    x = 1,028,417.31

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1.5x scale

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.