Home / 913,113.20-1,369,669.80-864,124.40

Finding the Fourth Proportional to 913,113.20, 1,369,669.80 and 864,124.40

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Solution

The fourth proportional to 913,113.20, 1,369,669.80 and 864,124.40 is: 1,296,186.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,113.20 : 1,369,669.80 = 864,124.40 : x
  2. Step 2: Convert to fraction form
    913,113.20/1,369,669.80 = 864,124.40/x
  3. Step 3: Cross multiply
    913,113.20x = 1,369,669.80 × 864,124.40
  4. Step 4: Simplify right side
    913,113.20x = 1,183,565,094,123.12
  5. Step 5: Solve for x
    x = 1,183,565,094,123.12/913,113.20
  6. Step 6: Final answer
    x = 1,296,186.60

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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.