Home / 1,247,932,924.40-1,871,395,501.80-429,624,009.20

Finding the Fourth Proportional to 1,247,932,924.40, 1,871,395,501.80 and 429,624,009.20

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Solution

The fourth proportional to 1,247,932,924.40, 1,871,395,501.80 and 429,624,009.20 is: 644,262,542.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,932,924.40 : 1,871,395,501.80 = 429,624,009.20 : x
  2. Step 2: Convert to fraction form
    1,247,932,924.40/1,871,395,501.80 = 429,624,009.20/x
  3. Step 3: Cross multiply
    1,247,932,924.40x = 1,871,395,501.80 × 429,624,009.20
  4. Step 4: Simplify right side
    1,247,932,924.40x = 803,996,438,282,161,792
  5. Step 5: Solve for x
    x = 803,996,438,282,161,792/1,247,932,924.40
  6. Step 6: Final answer
    x = 644,262,542.13

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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.