Home / 985,776.40-1,478,028.70-386,798.07

Finding the Fourth Proportional to 985,776.40, 1,478,028.70 and 386,798.07

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Solution

The fourth proportional to 985,776.40, 1,478,028.70 and 386,798.07 is: 579,947.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,776.40 : 1,478,028.70 = 386,798.07 : x
  2. Step 2: Convert to fraction form
    985,776.40/1,478,028.70 = 386,798.07/x
  3. Step 3: Cross multiply
    985,776.40x = 1,478,028.70 × 386,798.07
  4. Step 4: Simplify right side
    985,776.40x = 571,698,648,564.61
  5. Step 5: Solve for x
    x = 571,698,648,564.61/985,776.40
  6. Step 6: Final answer
    x = 579,947.59

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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.