Home / 690,719.65-953,178.72-384,795.61

Finding the Fourth Proportional to 690,719.65, 953,178.72 and 384,795.61

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Solution

The fourth proportional to 690,719.65, 953,178.72 and 384,795.61 is: 531,009.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,719.65 : 953,178.72 = 384,795.61 : x
  2. Step 2: Convert to fraction form
    690,719.65/953,178.72 = 384,795.61/x
  3. Step 3: Cross multiply
    690,719.65x = 953,178.72 × 384,795.61
  4. Step 4: Simplify right side
    690,719.65x = 366,778,987,001.42
  5. Step 5: Solve for x
    x = 366,778,987,001.42/690,719.65
  6. Step 6: Final answer
    x = 531,009.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.