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Finding the Fourth Proportional to 610,840.80, 918,010.80 and 533,858.40

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Solution

The fourth proportional to 610,840.80, 918,010.80 and 533,858.40 is: 802,316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,840.80 : 918,010.80 = 533,858.40 : x
  2. Step 2: Convert to fraction form
    610,840.80/918,010.80 = 533,858.40/x
  3. Step 3: Cross multiply
    610,840.80x = 918,010.80 × 533,858.40
  4. Step 4: Simplify right side
    610,840.80x = 490,087,776,870.72
  5. Step 5: Solve for x
    x = 490,087,776,870.72/610,840.80
  6. Step 6: Final answer
    x = 802,316.70

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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.