Home / 771,007.20-1,154,955.60-438,194.40

Finding the Fourth Proportional to 771,007.20, 1,154,955.60 and 438,194.40

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Solution

The fourth proportional to 771,007.20, 1,154,955.60 and 438,194.40 is: 656,407.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,007.20 : 1,154,955.60 = 438,194.40 : x
  2. Step 2: Convert to fraction form
    771,007.20/1,154,955.60 = 438,194.40/x
  3. Step 3: Cross multiply
    771,007.20x = 1,154,955.60 × 438,194.40
  4. Step 4: Simplify right side
    771,007.20x = 506,095,076,168.64
  5. Step 5: Solve for x
    x = 506,095,076,168.64/771,007.20
  6. Step 6: Final answer
    x = 656,407.72

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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.