Home / 390,889,198.90-586,333,303.19-99,756,328.20

Finding the Fourth Proportional to 390,889,198.90, 586,333,303.19 and 99,756,328.20

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Solution

The fourth proportional to 390,889,198.90, 586,333,303.19 and 99,756,328.20 is: 149,634,365.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,889,198.90 : 586,333,303.19 = 99,756,328.20 : x
  2. Step 2: Convert to fraction form
    390,889,198.90/586,333,303.19 = 99,756,328.20/x
  3. Step 3: Cross multiply
    390,889,198.90x = 586,333,303.19 × 99,756,328.20
  4. Step 4: Simplify right side
    390,889,198.90x = 58,490,457,424,680,080
  5. Step 5: Solve for x
    x = 58,490,457,424,680,080/390,889,198.90
  6. Step 6: Final answer
    x = 149,634,365.93

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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.