Home / 830,518.20-1,247,159.70-456,809.40

Finding the Fourth Proportional to 830,518.20, 1,247,159.70 and 456,809.40

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Solution

The fourth proportional to 830,518.20, 1,247,159.70 and 456,809.40 is: 685,974.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,518.20 : 1,247,159.70 = 456,809.40 : x
  2. Step 2: Convert to fraction form
    830,518.20/1,247,159.70 = 456,809.40/x
  3. Step 3: Cross multiply
    830,518.20x = 1,247,159.70 × 456,809.40
  4. Step 4: Simplify right side
    830,518.20x = 569,714,274,261.18
  5. Step 5: Solve for x
    x = 569,714,274,261.18/830,518.20
  6. Step 6: Final answer
    x = 685,974.46

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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.