Home / 860,000.40-1,290,000.60-544,813.20

Finding the Fourth Proportional to 860,000.40, 1,290,000.60 and 544,813.20

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Solution

The fourth proportional to 860,000.40, 1,290,000.60 and 544,813.20 is: 817,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,000.40 : 1,290,000.60 = 544,813.20 : x
  2. Step 2: Convert to fraction form
    860,000.40/1,290,000.60 = 544,813.20/x
  3. Step 3: Cross multiply
    860,000.40x = 1,290,000.60 × 544,813.20
  4. Step 4: Simplify right side
    860,000.40x = 702,809,354,887.92
  5. Step 5: Solve for x
    x = 702,809,354,887.92/860,000.40
  6. Step 6: Final answer
    x = 817,219.80

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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.