Home / 430,640,041.60-645,960,062.40-258,647,363.20

Finding the Fourth Proportional to 430,640,041.60, 645,960,062.40 and 258,647,363.20

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Solution

The fourth proportional to 430,640,041.60, 645,960,062.40 and 258,647,363.20 is: 387,971,044.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,640,041.60 : 645,960,062.40 = 258,647,363.20 : x
  2. Step 2: Convert to fraction form
    430,640,041.60/645,960,062.40 = 258,647,363.20/x
  3. Step 3: Cross multiply
    430,640,041.60x = 645,960,062.40 × 258,647,363.20
  4. Step 4: Simplify right side
    430,640,041.60x = 167,075,866,872,267,456
  5. Step 5: Solve for x
    x = 167,075,866,872,267,456/430,640,041.60
  6. Step 6: Final answer
    x = 387,971,044.80

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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.