Home / 1,020,121.70-1,528,870.35-620,338.10

Finding the Fourth Proportional to 1,020,121.70, 1,528,870.35 and 620,338.10

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Solution

The fourth proportional to 1,020,121.70, 1,528,870.35 and 620,338.10 is: 929,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,121.70 : 1,528,870.35 = 620,338.10 : x
  2. Step 2: Convert to fraction form
    1,020,121.70/1,528,870.35 = 620,338.10/x
  3. Step 3: Cross multiply
    1,020,121.70x = 1,528,870.35 × 620,338.10
  4. Step 4: Simplify right side
    1,020,121.70x = 948,416,528,065.34
  5. Step 5: Solve for x
    x = 948,416,528,065.34/1,020,121.70
  6. Step 6: Final answer
    x = 929,709.20

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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.