Home / 1,272,834,925.50-1,909,539,647.93-387,599,474.50

Finding the Fourth Proportional to 1,272,834,925.50, 1,909,539,647.93 and 387,599,474.50

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Solution

The fourth proportional to 1,272,834,925.50, 1,909,539,647.93 and 387,599,474.50 is: 581,486,687.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,834,925.50 : 1,909,539,647.93 = 387,599,474.50 : x
  2. Step 2: Convert to fraction form
    1,272,834,925.50/1,909,539,647.93 = 387,599,474.50/x
  3. Step 3: Cross multiply
    1,272,834,925.50x = 1,909,539,647.93 × 387,599,474.50
  4. Step 4: Simplify right side
    1,272,834,925.50x = 740,136,564,074,583,040
  5. Step 5: Solve for x
    x = 740,136,564,074,583,040/1,272,834,925.50
  6. Step 6: Final answer
    x = 581,486,687.12

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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.