Home / 912,665.07-1,369,025.55-313,617.69

Finding the Fourth Proportional to 912,665.07, 1,369,025.55 and 313,617.69

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Solution

The fourth proportional to 912,665.07, 1,369,025.55 and 313,617.69 is: 470,436.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,665.07 : 1,369,025.55 = 313,617.69 : x
  2. Step 2: Convert to fraction form
    912,665.07/1,369,025.55 = 313,617.69/x
  3. Step 3: Cross multiply
    912,665.07x = 1,369,025.55 × 313,617.69
  4. Step 4: Simplify right side
    912,665.07x = 429,350,630,541.98
  5. Step 5: Solve for x
    x = 429,350,630,541.98/912,665.07
  6. Step 6: Final answer
    x = 470,436.14

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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.