Home / 870,977,246.40-1,306,465,869.60-435,620,779.20

Finding the Fourth Proportional to 870,977,246.40, 1,306,465,869.60 and 435,620,779.20

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Solution

The fourth proportional to 870,977,246.40, 1,306,465,869.60 and 435,620,779.20 is: 653,431,168.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,977,246.40 : 1,306,465,869.60 = 435,620,779.20 : x
  2. Step 2: Convert to fraction form
    870,977,246.40/1,306,465,869.60 = 435,620,779.20/x
  3. Step 3: Cross multiply
    870,977,246.40x = 1,306,465,869.60 × 435,620,779.20
  4. Step 4: Simplify right side
    870,977,246.40x = 569,123,680,113,357,504
  5. Step 5: Solve for x
    x = 569,123,680,113,357,504/870,977,246.40
  6. Step 6: Final answer
    x = 653,431,168.80

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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.