Home / 898,430.90-1,239,943.37-511,340.45

Finding the Fourth Proportional to 898,430.90, 1,239,943.37 and 511,340.45

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Solution

The fourth proportional to 898,430.90, 1,239,943.37 and 511,340.45 is: 705,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,430.90 : 1,239,943.37 = 511,340.45 : x
  2. Step 2: Convert to fraction form
    898,430.90/1,239,943.37 = 511,340.45/x
  3. Step 3: Cross multiply
    898,430.90x = 1,239,943.37 × 511,340.45
  4. Step 4: Simplify right side
    898,430.90x = 634,033,192,033.90
  5. Step 5: Solve for x
    x = 634,033,192,033.90/898,430.90
  6. Step 6: Final answer
    x = 705,711.70

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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.