Home / 828,000.30-1,242,000.45-707,277.90

Finding the Fourth Proportional to 828,000.30, 1,242,000.45 and 707,277.90

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Solution

The fourth proportional to 828,000.30, 1,242,000.45 and 707,277.90 is: 1,060,916.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,000.30 : 1,242,000.45 = 707,277.90 : x
  2. Step 2: Convert to fraction form
    828,000.30/1,242,000.45 = 707,277.90/x
  3. Step 3: Cross multiply
    828,000.30x = 1,242,000.45 × 707,277.90
  4. Step 4: Simplify right side
    828,000.30x = 878,439,470,075.06
  5. Step 5: Solve for x
    x = 878,439,470,075.06/828,000.30
  6. Step 6: Final answer
    x = 1,060,916.85

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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.