Home / 708,206.08-977,210.04-421,718.80

Finding the Fourth Proportional to 708,206.08, 977,210.04 and 421,718.80

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Solution

The fourth proportional to 708,206.08, 977,210.04 and 421,718.80 is: 581,903.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,206.08 : 977,210.04 = 421,718.80 : x
  2. Step 2: Convert to fraction form
    708,206.08/977,210.04 = 421,718.80/x
  3. Step 3: Cross multiply
    708,206.08x = 977,210.04 × 421,718.80
  4. Step 4: Simplify right side
    708,206.08x = 412,107,845,416.75
  5. Step 5: Solve for x
    x = 412,107,845,416.75/708,206.08
  6. Step 6: Final answer
    x = 581,903.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.