Home / 918,721.70-1,378,266.50-514,488.77

Finding the Fourth Proportional to 918,721.70, 1,378,266.50 and 514,488.77

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Solution

The fourth proportional to 918,721.70, 1,378,266.50 and 514,488.77 is: 771,836.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,721.70 : 1,378,266.50 = 514,488.77 : x
  2. Step 2: Convert to fraction form
    918,721.70/1,378,266.50 = 514,488.77/x
  3. Step 3: Cross multiply
    918,721.70x = 1,378,266.50 × 514,488.77
  4. Step 4: Simplify right side
    918,721.70x = 709,102,636,317.21
  5. Step 5: Solve for x
    x = 709,102,636,317.21/918,721.70
  6. Step 6: Final answer
    x = 771,836.17

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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.