Home / 610,831.40-918,215.40-434,559.20

Finding the Fourth Proportional to 610,831.40, 918,215.40 and 434,559.20

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Solution

The fourth proportional to 610,831.40, 918,215.40 and 434,559.20 is: 653,239.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,831.40 : 918,215.40 = 434,559.20 : x
  2. Step 2: Convert to fraction form
    610,831.40/918,215.40 = 434,559.20/x
  3. Step 3: Cross multiply
    610,831.40x = 918,215.40 × 434,559.20
  4. Step 4: Simplify right side
    610,831.40x = 399,018,949,651.68
  5. Step 5: Solve for x
    x = 399,018,949,651.68/610,831.40
  6. Step 6: Final answer
    x = 653,239.09

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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.