Home / 711,584.18-981,967.34-421,210.72

Finding the Fourth Proportional to 711,584.18, 981,967.34 and 421,210.72

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Solution

The fourth proportional to 711,584.18, 981,967.34 and 421,210.72 is: 581,259.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,584.18 : 981,967.34 = 421,210.72 : x
  2. Step 2: Convert to fraction form
    711,584.18/981,967.34 = 421,210.72/x
  3. Step 3: Cross multiply
    711,584.18x = 981,967.34 × 421,210.72
  4. Step 4: Simplify right side
    711,584.18x = 413,615,163,282.00
  5. Step 5: Solve for x
    x = 413,615,163,282.00/711,584.18
  6. Step 6: Final answer
    x = 581,259.64

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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.