Home / 719,248,511.28-992,562,913.08-389,223,659.28

Finding the Fourth Proportional to 719,248,511.28, 992,562,913.08 and 389,223,659.28

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Solution

The fourth proportional to 719,248,511.28, 992,562,913.08 and 389,223,659.28 is: 537,128,632.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,248,511.28 : 992,562,913.08 = 389,223,659.28 : x
  2. Step 2: Convert to fraction form
    719,248,511.28/992,562,913.08 = 389,223,659.28/x
  3. Step 3: Cross multiply
    719,248,511.28x = 992,562,913.08 × 389,223,659.28
  4. Step 4: Simplify right side
    719,248,511.28x = 386,328,969,094,614,144
  5. Step 5: Solve for x
    x = 386,328,969,094,614,144/719,248,511.28
  6. Step 6: Final answer
    x = 537,128,632.23

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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.