Home / 880,730.80-1,321,312.20-407,316.40

Finding the Fourth Proportional to 880,730.80, 1,321,312.20 and 407,316.40

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Solution

The fourth proportional to 880,730.80, 1,321,312.20 and 407,316.40 is: 611,074.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,730.80 : 1,321,312.20 = 407,316.40 : x
  2. Step 2: Convert to fraction form
    880,730.80/1,321,312.20 = 407,316.40/x
  3. Step 3: Cross multiply
    880,730.80x = 1,321,312.20 × 407,316.40
  4. Step 4: Simplify right side
    880,730.80x = 538,192,128,580.08
  5. Step 5: Solve for x
    x = 538,192,128,580.08/880,730.80
  6. Step 6: Final answer
    x = 611,074.49

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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.