Home / 719,296,862.45-992,629,657.94-389,272,001.45

Finding the Fourth Proportional to 719,296,862.45, 992,629,657.94 and 389,272,001.45

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Solution

The fourth proportional to 719,296,862.45, 992,629,657.94 and 389,272,001.45 is: 537,195,355.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,296,862.45 : 992,629,657.94 = 389,272,001.45 : x
  2. Step 2: Convert to fraction form
    719,296,862.45/992,629,657.94 = 389,272,001.45/x
  3. Step 3: Cross multiply
    719,296,862.45x = 992,629,657.94 × 389,272,001.45
  4. Step 4: Simplify right side
    719,296,862.45x = 386,402,933,638,023,168
  5. Step 5: Solve for x
    x = 386,402,933,638,023,168/719,296,862.45
  6. Step 6: Final answer
    x = 537,195,355.37

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1.5x scale

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.