Home / 520,292,798.64-780,438,366.36-287,112,233.52

Finding the Fourth Proportional to 520,292,798.64, 780,438,366.36 and 287,112,233.52

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Solution

The fourth proportional to 520,292,798.64, 780,438,366.36 and 287,112,233.52 is: 430,667,891.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,292,798.64 : 780,438,366.36 = 287,112,233.52 : x
  2. Step 2: Convert to fraction form
    520,292,798.64/780,438,366.36 = 287,112,233.52/x
  3. Step 3: Cross multiply
    520,292,798.64x = 780,438,366.36 × 287,112,233.52
  4. Step 4: Simplify right side
    520,292,798.64x = 224,073,402,490,319,616
  5. Step 5: Solve for x
    x = 224,073,402,490,319,616/520,292,798.64
  6. Step 6: Final answer
    x = 430,667,891.38

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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.