Home / 686,312,570.70-1,029,605,849.70-358,935,466.86

Finding the Fourth Proportional to 686,312,570.70, 1,029,605,849.70 and 358,935,466.86

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Solution

The fourth proportional to 686,312,570.70, 1,029,605,849.70 and 358,935,466.86 is: 538,474,846.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,312,570.70 : 1,029,605,849.70 = 358,935,466.86 : x
  2. Step 2: Convert to fraction form
    686,312,570.70/1,029,605,849.70 = 358,935,466.86/x
  3. Step 3: Cross multiply
    686,312,570.70x = 1,029,605,849.70 × 358,935,466.86
  4. Step 4: Simplify right side
    686,312,570.70x = 369,562,056,343,856,512
  5. Step 5: Solve for x
    x = 369,562,056,343,856,512/686,312,570.70
  6. Step 6: Final answer
    x = 538,474,846.77

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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.