Home / 1,020,551,758.85-1,531,421,772.77-430,304,985.38

Finding the Fourth Proportional to 1,020,551,758.85, 1,531,421,772.77 and 430,304,985.38

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Solution

The fourth proportional to 1,020,551,758.85, 1,531,421,772.77 and 430,304,985.38 is: 645,707,988.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,551,758.85 : 1,531,421,772.77 = 430,304,985.38 : x
  2. Step 2: Convert to fraction form
    1,020,551,758.85/1,531,421,772.77 = 430,304,985.38/x
  3. Step 3: Cross multiply
    1,020,551,758.85x = 1,531,421,772.77 × 430,304,985.38
  4. Step 4: Simplify right side
    1,020,551,758.85x = 658,978,423,547,312,896
  5. Step 5: Solve for x
    x = 658,978,423,547,312,896/1,020,551,758.85
  6. Step 6: Final answer
    x = 645,707,988.67

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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.