Home / 390,889,443.60-586,333,668.60-99,756,571.68

Finding the Fourth Proportional to 390,889,443.60, 586,333,668.60 and 99,756,571.68

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Solution

The fourth proportional to 390,889,443.60, 586,333,668.60 and 99,756,571.68 is: 149,634,730.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,889,443.60 : 586,333,668.60 = 99,756,571.68 : x
  2. Step 2: Convert to fraction form
    390,889,443.60/586,333,668.60 = 99,756,571.68/x
  3. Step 3: Cross multiply
    390,889,443.60x = 586,333,668.60 × 99,756,571.68
  4. Step 4: Simplify right side
    390,889,443.60x = 58,490,636,640,093,272
  5. Step 5: Solve for x
    x = 58,490,636,640,093,272/390,889,443.60
  6. Step 6: Final answer
    x = 149,634,730.73

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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.