Home / 521,473,721.40-782,210,582.10-157,968,077.40

Finding the Fourth Proportional to 521,473,721.40, 782,210,582.10 and 157,968,077.40

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Solution

The fourth proportional to 521,473,721.40, 782,210,582.10 and 157,968,077.40 is: 236,952,116.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,473,721.40 : 782,210,582.10 = 157,968,077.40 : x
  2. Step 2: Convert to fraction form
    521,473,721.40/782,210,582.10 = 157,968,077.40/x
  3. Step 3: Cross multiply
    521,473,721.40x = 782,210,582.10 × 157,968,077.40
  4. Step 4: Simplify right side
    521,473,721.40x = 123,564,301,776,271,856
  5. Step 5: Solve for x
    x = 123,564,301,776,271,856/521,473,721.40
  6. Step 6: Final answer
    x = 236,952,116.10

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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.