Home / 578,746.40-798,661.35-320,622.80

Finding the Fourth Proportional to 578,746.40, 798,661.35 and 320,622.80

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Solution

The fourth proportional to 578,746.40, 798,661.35 and 320,622.80 is: 442,454.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,746.40 : 798,661.35 = 320,622.80 : x
  2. Step 2: Convert to fraction form
    578,746.40/798,661.35 = 320,622.80/x
  3. Step 3: Cross multiply
    578,746.40x = 798,661.35 × 320,622.80
  4. Step 4: Simplify right side
    578,746.40x = 256,069,034,295.47
  5. Step 5: Solve for x
    x = 256,069,034,295.47/578,746.40
  6. Step 6: Final answer
    x = 442,454.65

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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.