Home / 828,990.10-1,243,485.15-429,498.10

Finding the Fourth Proportional to 828,990.10, 1,243,485.15 and 429,498.10

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Solution

The fourth proportional to 828,990.10, 1,243,485.15 and 429,498.10 is: 644,247.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,990.10 : 1,243,485.15 = 429,498.10 : x
  2. Step 2: Convert to fraction form
    828,990.10/1,243,485.15 = 429,498.10/x
  3. Step 3: Cross multiply
    828,990.10x = 1,243,485.15 × 429,498.10
  4. Step 4: Simplify right side
    828,990.10x = 534,074,509,303.22
  5. Step 5: Solve for x
    x = 534,074,509,303.22/828,990.10
  6. Step 6: Final answer
    x = 644,247.15

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Double scale
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Similar ratio
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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.