Home / 638,842,430.40-881,605,211.04-345,486,998.40

Finding the Fourth Proportional to 638,842,430.40, 881,605,211.04 and 345,486,998.40

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Solution

The fourth proportional to 638,842,430.40, 881,605,211.04 and 345,486,998.40 is: 476,773,494.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,842,430.40 : 881,605,211.04 = 345,486,998.40 : x
  2. Step 2: Convert to fraction form
    638,842,430.40/881,605,211.04 = 345,486,998.40/x
  3. Step 3: Cross multiply
    638,842,430.40x = 881,605,211.04 × 345,486,998.40
  4. Step 4: Simplify right side
    638,842,430.40x = 304,583,138,136,008,128
  5. Step 5: Solve for x
    x = 304,583,138,136,008,128/638,842,430.40
  6. Step 6: Final answer
    x = 476,773,494.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.