Home / 1,020,205.20-1,530,307.80-909,980.40

Finding the Fourth Proportional to 1,020,205.20, 1,530,307.80 and 909,980.40

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Solution

The fourth proportional to 1,020,205.20, 1,530,307.80 and 909,980.40 is: 1,364,970.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,205.20 : 1,530,307.80 = 909,980.40 : x
  2. Step 2: Convert to fraction form
    1,020,205.20/1,530,307.80 = 909,980.40/x
  3. Step 3: Cross multiply
    1,020,205.20x = 1,530,307.80 × 909,980.40
  4. Step 4: Simplify right side
    1,020,205.20x = 1,392,550,103,967.12
  5. Step 5: Solve for x
    x = 1,392,550,103,967.12/1,020,205.20
  6. Step 6: Final answer
    x = 1,364,970.60

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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.