Home / 427,015,667.80-640,523,501.70-254,687,066.20

Finding the Fourth Proportional to 427,015,667.80, 640,523,501.70 and 254,687,066.20

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Solution

The fourth proportional to 427,015,667.80, 640,523,501.70 and 254,687,066.20 is: 382,030,599.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,015,667.80 : 640,523,501.70 = 254,687,066.20 : x
  2. Step 2: Convert to fraction form
    427,015,667.80/640,523,501.70 = 254,687,066.20/x
  3. Step 3: Cross multiply
    427,015,667.80x = 640,523,501.70 × 254,687,066.20
  4. Step 4: Simplify right side
    427,015,667.80x = 163,133,051,480,123,712
  5. Step 5: Solve for x
    x = 163,133,051,480,123,712/427,015,667.80
  6. Step 6: Final answer
    x = 382,030,599.30

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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.