Home / 520,129,813.92-780,075,332.02-310,099,929.36

Finding the Fourth Proportional to 520,129,813.92, 780,075,332.02 and 310,099,929.36

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Solution

The fourth proportional to 520,129,813.92, 780,075,332.02 and 310,099,929.36 is: 465,078,714.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,129,813.92 : 780,075,332.02 = 310,099,929.36 : x
  2. Step 2: Convert to fraction form
    520,129,813.92/780,075,332.02 = 310,099,929.36/x
  3. Step 3: Cross multiply
    520,129,813.92x = 780,075,332.02 × 310,099,929.36
  4. Step 4: Simplify right side
    520,129,813.92x = 241,901,305,354,880,544
  5. Step 5: Solve for x
    x = 241,901,305,354,880,544/520,129,813.92
  6. Step 6: Final answer
    x = 465,078,714.74

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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.