Home / 523,710,221.69-722,752,364.86-288,760,155.59

Finding the Fourth Proportional to 523,710,221.69, 722,752,364.86 and 288,760,155.59

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Solution

The fourth proportional to 523,710,221.69, 722,752,364.86 and 288,760,155.59 is: 398,506,801.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,710,221.69 : 722,752,364.86 = 288,760,155.59 : x
  2. Step 2: Convert to fraction form
    523,710,221.69/722,752,364.86 = 288,760,155.59/x
  3. Step 3: Cross multiply
    523,710,221.69x = 722,752,364.86 × 288,760,155.59
  4. Step 4: Simplify right side
    523,710,221.69x = 208,702,085,331,099,008
  5. Step 5: Solve for x
    x = 208,702,085,331,099,008/523,710,221.69
  6. Step 6: Final answer
    x = 398,506,801.45

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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.