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Finding the Fourth Proportional to 979,368.76, 1,471,706.70 and 530,421.40

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Solution

The fourth proportional to 979,368.76, 1,471,706.70 and 530,421.40 is: 797,069.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,368.76 : 1,471,706.70 = 530,421.40 : x
  2. Step 2: Convert to fraction form
    979,368.76/1,471,706.70 = 530,421.40/x
  3. Step 3: Cross multiply
    979,368.76x = 1,471,706.70 × 530,421.40
  4. Step 4: Simplify right side
    979,368.76x = 780,624,728,203.38
  5. Step 5: Solve for x
    x = 780,624,728,203.38/979,368.76
  6. Step 6: Final answer
    x = 797,069.26

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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.