Home / 679,912,939.20-1,019,869,408.80-435,024,926.40

Finding the Fourth Proportional to 679,912,939.20, 1,019,869,408.80 and 435,024,926.40

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Solution

The fourth proportional to 679,912,939.20, 1,019,869,408.80 and 435,024,926.40 is: 652,537,389.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,912,939.20 : 1,019,869,408.80 = 435,024,926.40 : x
  2. Step 2: Convert to fraction form
    679,912,939.20/1,019,869,408.80 = 435,024,926.40/x
  3. Step 3: Cross multiply
    679,912,939.20x = 1,019,869,408.80 × 435,024,926.40
  4. Step 4: Simplify right side
    679,912,939.20x = 443,668,614,500,831,488
  5. Step 5: Solve for x
    x = 443,668,614,500,831,488/679,912,939.20
  6. Step 6: Final answer
    x = 652,537,389.60

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1.5x scale

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.