Home / 403,357,289.40-605,035,934.10-385,665,334.20

Finding the Fourth Proportional to 403,357,289.40, 605,035,934.10 and 385,665,334.20

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Solution

The fourth proportional to 403,357,289.40, 605,035,934.10 and 385,665,334.20 is: 578,498,001.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,357,289.40 : 605,035,934.10 = 385,665,334.20 : x
  2. Step 2: Convert to fraction form
    403,357,289.40/605,035,934.10 = 385,665,334.20/x
  3. Step 3: Cross multiply
    403,357,289.40x = 605,035,934.10 × 385,665,334.20
  4. Step 4: Simplify right side
    403,357,289.40x = 233,341,385,727,685,664
  5. Step 5: Solve for x
    x = 233,341,385,727,685,664/403,357,289.40
  6. Step 6: Final answer
    x = 578,498,001.30

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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.