Home / 1,208,523,618-1,812,785,428.08-390,635,920.08

Finding the Fourth Proportional to 1,208,523,618, 1,812,785,428.08 and 390,635,920.08

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Solution

The fourth proportional to 1,208,523,618, 1,812,785,428.08 and 390,635,920.08 is: 585,953,880.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,523,618 : 1,812,785,428.08 = 390,635,920.08 : x
  2. Step 2: Convert to fraction form
    1,208,523,618/1,812,785,428.08 = 390,635,920.08/x
  3. Step 3: Cross multiply
    1,208,523,618x = 1,812,785,428.08 × 390,635,920.08
  4. Step 4: Simplify right side
    1,208,523,618x = 708,139,103,605,647,360
  5. Step 5: Solve for x
    x = 708,139,103,605,647,360/1,208,523,618
  6. Step 6: Final answer
    x = 585,953,880.47

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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.