Home / 430,514,744.16-645,612,681.36-139,306,333.76

Finding the Fourth Proportional to 430,514,744.16, 645,612,681.36 and 139,306,333.76

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Solution

The fourth proportional to 430,514,744.16, 645,612,681.36 and 139,306,333.76 is: 208,907,910.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,514,744.16 : 645,612,681.36 = 139,306,333.76 : x
  2. Step 2: Convert to fraction form
    430,514,744.16/645,612,681.36 = 139,306,333.76/x
  3. Step 3: Cross multiply
    430,514,744.16x = 645,612,681.36 × 139,306,333.76
  4. Step 4: Simplify right side
    430,514,744.16x = 89,937,935,669,224,688
  5. Step 5: Solve for x
    x = 89,937,935,669,224,688/430,514,744.16
  6. Step 6: Final answer
    x = 208,907,910.56

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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.