Home / 703,335,047.40-970,533,221.22-390,063,801.96

Finding the Fourth Proportional to 703,335,047.40, 970,533,221.22 and 390,063,801.96

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Solution

The fourth proportional to 703,335,047.40, 970,533,221.22 and 390,063,801.96 is: 538,249,699.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,335,047.40 : 970,533,221.22 = 390,063,801.96 : x
  2. Step 2: Convert to fraction form
    703,335,047.40/970,533,221.22 = 390,063,801.96/x
  3. Step 3: Cross multiply
    703,335,047.40x = 970,533,221.22 × 390,063,801.96
  4. Step 4: Simplify right side
    703,335,047.40x = 378,569,878,197,558,912
  5. Step 5: Solve for x
    x = 378,569,878,197,558,912/703,335,047.40
  6. Step 6: Final answer
    x = 538,249,699.91

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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.