Home / 438,047,999.40-657,071,999.10-265,719,397.80

Finding the Fourth Proportional to 438,047,999.40, 657,071,999.10 and 265,719,397.80

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Solution

The fourth proportional to 438,047,999.40, 657,071,999.10 and 265,719,397.80 is: 398,579,096.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,047,999.40 : 657,071,999.10 = 265,719,397.80 : x
  2. Step 2: Convert to fraction form
    438,047,999.40/657,071,999.10 = 265,719,397.80/x
  3. Step 3: Cross multiply
    438,047,999.40x = 657,071,999.10 × 265,719,397.80
  4. Step 4: Simplify right side
    438,047,999.40x = 174,596,775,912,094,144
  5. Step 5: Solve for x
    x = 174,596,775,912,094,144/438,047,999.40
  6. Step 6: Final answer
    x = 398,579,096.70

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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.