Home / 390,893,721.60-586,340,582.40-299,060,716.80

Finding the Fourth Proportional to 390,893,721.60, 586,340,582.40 and 299,060,716.80

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Solution

The fourth proportional to 390,893,721.60, 586,340,582.40 and 299,060,716.80 is: 448,591,075.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,893,721.60 : 586,340,582.40 = 299,060,716.80 : x
  2. Step 2: Convert to fraction form
    390,893,721.60/586,340,582.40 = 299,060,716.80/x
  3. Step 3: Cross multiply
    390,893,721.60x = 586,340,582.40 × 299,060,716.80
  4. Step 4: Simplify right side
    390,893,721.60x = 175,351,434,861,473,472
  5. Step 5: Solve for x
    x = 175,351,434,861,473,472/390,893,721.60
  6. Step 6: Final answer
    x = 448,591,075.20

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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.