Home / 739,811.80-1,020,940.20-400,280.08

Finding the Fourth Proportional to 739,811.80, 1,020,940.20 and 400,280.08

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Solution

The fourth proportional to 739,811.80, 1,020,940.20 and 400,280.08 is: 552,386.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,811.80 : 1,020,940.20 = 400,280.08 : x
  2. Step 2: Convert to fraction form
    739,811.80/1,020,940.20 = 400,280.08/x
  3. Step 3: Cross multiply
    739,811.80x = 1,020,940.20 × 400,280.08
  4. Step 4: Simplify right side
    739,811.80x = 408,662,024,931.22
  5. Step 5: Solve for x
    x = 408,662,024,931.22/739,811.80
  6. Step 6: Final answer
    x = 552,386.46

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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.