Home / 390,879,583,285.36-585,227,008,807.05-211,161,712,509.04

Finding the Fourth Proportional to 390,879,583,285.36, 585,227,008,807.05 and 211,161,712,509.04

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Solution

The fourth proportional to 390,879,583,285.36, 585,227,008,807.05 and 211,161,712,509.04 is: 316,152,448,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,879,583,285.36 : 585,227,008,807.05 = 211,161,712,509.04 : x
  2. Step 2: Convert to fraction form
    390,879,583,285.36/585,227,008,807.05 = 211,161,712,509.04/x
  3. Step 3: Cross multiply
    390,879,583,285.36x = 585,227,008,807.05 × 211,161,712,509.04
  4. Step 4: Simplify right side
    390,879,583,285.36x = 123,577,537,386,239,720,685,568
  5. Step 5: Solve for x
    x = 123,577,537,386,239,720,685,568/390,879,583,285.36
  6. Step 6: Final answer
    x = 316,152,448,658.40

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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.