Home / 646,316,335.92-970,909,394.76-400,854,367.20

Finding the Fourth Proportional to 646,316,335.92, 970,909,394.76 and 400,854,367.20

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Solution

The fourth proportional to 646,316,335.92, 970,909,394.76 and 400,854,367.20 is: 602,171,490.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,316,335.92 : 970,909,394.76 = 400,854,367.20 : x
  2. Step 2: Convert to fraction form
    646,316,335.92/970,909,394.76 = 400,854,367.20/x
  3. Step 3: Cross multiply
    646,316,335.92x = 970,909,394.76 × 400,854,367.20
  4. Step 4: Simplify right side
    646,316,335.92x = 389,193,271,045,054,784
  5. Step 5: Solve for x
    x = 389,193,271,045,054,784/646,316,335.92
  6. Step 6: Final answer
    x = 602,171,490.05

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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.