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Finding the Fourth Proportional to 520,547.10, 780,820.65 and 146,570.10

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Solution

The fourth proportional to 520,547.10, 780,820.65 and 146,570.10 is: 219,855.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,547.10 : 780,820.65 = 146,570.10 : x
  2. Step 2: Convert to fraction form
    520,547.10/780,820.65 = 146,570.10/x
  3. Step 3: Cross multiply
    520,547.10x = 780,820.65 × 146,570.10
  4. Step 4: Simplify right side
    520,547.10x = 114,444,960,752.57
  5. Step 5: Solve for x
    x = 114,444,960,752.57/520,547.10
  6. Step 6: Final answer
    x = 219,855.15

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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.