Home / 578,430.10-867,645.15-490,075.30

Finding the Fourth Proportional to 578,430.10, 867,645.15 and 490,075.30

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Solution

The fourth proportional to 578,430.10, 867,645.15 and 490,075.30 is: 735,112.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,430.10 : 867,645.15 = 490,075.30 : x
  2. Step 2: Convert to fraction form
    578,430.10/867,645.15 = 490,075.30/x
  3. Step 3: Cross multiply
    578,430.10x = 867,645.15 × 490,075.30
  4. Step 4: Simplify right side
    578,430.10x = 425,211,457,179.80
  5. Step 5: Solve for x
    x = 425,211,457,179.80/578,430.10
  6. Step 6: Final answer
    x = 735,112.95

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Double scale
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Similar ratio
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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.