Home / 515,031,809.40-772,547,714.10-310,454,580.60

Finding the Fourth Proportional to 515,031,809.40, 772,547,714.10 and 310,454,580.60

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Solution

The fourth proportional to 515,031,809.40, 772,547,714.10 and 310,454,580.60 is: 465,681,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,031,809.40 : 772,547,714.10 = 310,454,580.60 : x
  2. Step 2: Convert to fraction form
    515,031,809.40/772,547,714.10 = 310,454,580.60/x
  3. Step 3: Cross multiply
    515,031,809.40x = 772,547,714.10 × 310,454,580.60
  4. Step 4: Simplify right side
    515,031,809.40x = 239,840,976,574,404,224
  5. Step 5: Solve for x
    x = 239,840,976,574,404,224/515,031,809.40
  6. Step 6: Final answer
    x = 465,681,870.90

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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.