Home / 515,097,803.40-772,646,705.10-310,520,574.60

Finding the Fourth Proportional to 515,097,803.40, 772,646,705.10 and 310,520,574.60

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Solution

The fourth proportional to 515,097,803.40, 772,646,705.10 and 310,520,574.60 is: 465,780,861.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,097,803.40 : 772,646,705.10 = 310,520,574.60 : x
  2. Step 2: Convert to fraction form
    515,097,803.40/772,646,705.10 = 310,520,574.60/x
  3. Step 3: Cross multiply
    515,097,803.40x = 772,646,705.10 × 310,520,574.60
  4. Step 4: Simplify right side
    515,097,803.40x = 239,922,698,830,448,768
  5. Step 5: Solve for x
    x = 239,922,698,830,448,768/515,097,803.40
  6. Step 6: Final answer
    x = 465,780,861.90

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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.